One time my girl and I split a hotel with a good friend and his girlfriend to have a little party (younger years before we owned our own houses). The night ended with my girlfriend and I having sex on a bed next to them while they had sex. My friend said "let's swap" and I quickly agreed, as his girlfriend was a gorgeous Puerto Rican girl. She was short, petite but had great tits and an ass out of this world. It seemed that all parties were into it except for my girlfriend. She got really angry. Little did she or my friend know, years before I met my girlfriend, I actually lost my virginity to my friends girlfriend and wanted a repeat. Ugh, would've been awesome lol